Q.

An aircraft can perform aerobatic manoeuvres in a vertical loop because of-

A. gravity
B. centripetal force
C. weight
D. centrifugal force
Answer» A. gravity
Explanation: It happens because of gravity. A key feature of super maneuvering aircrafts is a high thrust-to-weight ratio; that is, the comparison of the force produced by the engines to the aircraft's weight, which is the force of gravity on the aircraft.
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